weighted average of all the naturally occurring isotopes
atoms of the same element having different masses due to different numbers of neutrons
refers to the nucleus of an atom which includes protons and neutrons
an atom or group of atoms that have a positive or negative charge
have a -1 charge, 0 (mass number) and a very low amu number
have a +1 charge, 1 (mass number), and 1.007276 amu number
have a 0 charge, 1 (mass number), and 1.008665 amu number
has 1 proton, 0 neutrons, and 99.985% abundance
has 1 proton, 0 neutrons, and 0.015% abundance
has 1 proton, 2 neutrons, and a trace amount
62 neutrons and 48 protons
How many protons and neutrons in Cd-110?
15 protons, 19 neutrons, and 18 electrons
How many protons, neutrons, and electrons in P P(-3)-34?
51 protons, 71 neutrons, and 46 electrons
How many protons, neutrons, and electrons in Sb+5-122?
the measure of the amount of substance
6.02 x 10^23
what is the mole/Avogadro's number? (the number written in scientific notation)
atomic mass unit (amu)
a unit of mass equal to one-twelfth the mass of a carbon 12 atom
!!!!!!!!! know this
divide by the molar mass
to convert mass to moles, you...
multiply by the molar mass
to convert moles to mass you...
multiply by 22.4 L
to convert moles to volume you...
divide by 22.4 L
to convert volume to moles you...
multiply by 6.02 x 10^23
to convert moles to atoms, particles, molecules you...
divide by 6.02 x 10^23
to convert atoms, particles, and molecules to moles you...
1(.992) + 2(0.008) = 0.992 + 0.016 = 1.008 amu
Hydrogen consists of three isotopes: protium (H-1), deuterium (H-2 ), and tritium (H-3). Calculate the average atomic mass of hydrogen if the relative abundance of H-1 is 99.2 %, H-2 is 0.8%, with only trace amounts of H-3.